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Apnimed investor converts notes and buys stock

Morningside Venture Investments Ltd, a 10% owner of Apnimed, Inc., reported IPO-related restructuring transactions and a share purchase.

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Form Type
4

Rhea-AI Filing Summary

Morningside Venture Investments Ltd, a 10% owner of Apnimed, Inc., reported IPO-related restructuring transactions and a share purchase. Convertible preferred stock automatically converted into 6,840,213 shares of Class A Common Stock immediately prior to the IPO closing, then Class A was reclassified into common stock in a transaction described as exempt under Rule 16b-7. A $1,000,000 convertible promissory note, bearing 8% then 15% interest, automatically converted into 75,624 Class A shares at a $14.40 conversion price based on an IPO price of $16 per share. In addition, the reporting person purchased 312,500 shares of common stock at $16 per share in an open-market or private transaction. Certain shares are held indirectly through MVIL, LLC, and Morningside’s directors share voting and dispositive power and disclaim beneficial ownership.

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Insider Morningside Venture Investments Ltd
Role 10% Owner
Bought 312,500 shs ($5.00M)
Type Security Shares Price Value
Conversion Convertible Preferred Stock F1, F2 9,227,454 $0.00 $0.00
Conversion Convertible Promissory Note F4, F5, F2, F6 1,088,986.3 $0.00 $0.00
Conversion Class A Common Stock F1, F2 6,840,213 -- --
Other Class A Common Stock F3, F2 6,840,213 -- --
Other Common Stock F3, F2 6,840,213 -- --
Purchase Common Stock F2 312,500 $16.00 $5.00M
Conversion Class A Common Stock F4, F2, F6 75,624 $14.40 $1.09M
Other Class A Common Stock F3, F2, F6 75,624 -- --
Other Common Stock F3, F2, F6 75,624 -- --
Holdings After Transaction: Convertible Preferred Stock — 0 contracts (Direct); Convertible Promissory Note — 0 contracts (Indirect, By MVIL, LLC); Class A Common Stock — 0 shares (Direct); Common Stock — 7,152,713 shares (Direct); Class A Common Stock — 0 shares (Indirect, By MVIL, LLC); Common Stock — 75,624 shares (Indirect, By MVIL, LLC)
Footnotes (6)
  1. F1. Each share of convertible preferred stock ("Convertible Preferred Stock") was convertible into one share of Class A common stock ("Class A Common Stock") at any time at the option of the holder into such number of fully paid and non-assessable shares of Class A Common Stock as was determined by dividing the original issuance price of each series of Convertible Preferred Stock by each series' conversion price in effect at the time of conversion. The Convertible Preferred Stock reported herein automatically converted immediately prior to the closing of the Issuer's initial public offering (the "IPO") into 6,840,213 shares of Class A Common Stock without payment of additional consideration. The Convertible Preferred Stock had no expiration date.
  2. F2. Frances Anne Elizabeth Richard, Jill Marie Franklin, Peter Stuart Allenby Edwards, and Cheung Ka Ho are the directors of Morningside Venture Investments Limited ("Morningside") and share voting and dispositive power with respect to the securities held by Morningside and MVIL, LLC, Morningside's wholly-owned subsidiary. Ms. Richard, Ms. Franklin, Mr. Edwards, and Mr. Cheung each disclaim ownership of the securities owned by Morningside and MVIL, LLC.
  3. F3. Following the conversion of all outstanding shares of the Issuer's Convertible Preferred Stock, Class B common stock, Class C common stock, and Convertible Promissory Notes (the "Notes") into shares of Class A Common Stock immediately prior to the closing of the IPO, each share of Class A Common Stock was then reclassified into one share of common stock ("Common Stock") in a transaction exempt from Section 16(b) of the Securities Exchange Act of 1934, as amended (the "Exchange Act") pursuant to Rule 16b-7 thereunder (the "Reclassification").
  4. F4. The Notes were originally issued on September 17, 2025, with the Reporting Person acquiring a Note with a principal amount of $1,000,000. The Notes earned interest at a rate of 8% annually until March 31, 2026, and thereafter earned interest at a rate of 15% annually until repaid or converted. The Notes included a conversion feature providing for automatic conversion into Class A Common Stock at or immediately prior to the closing of the IPO at a 10% discount to the IPO price per share. As a result of the IPO pricing on July 30, 2026, at a price of $16 per share, this Note automatically converted into shares of Class A Common Stock immediately prior to the closing of the IPO on August 3, 2026, at a conversion price of $14.40.
  5. F5. The Notes were scheduled to mature on September 17, 2027, but converted automatically upon the closing of the IPO on August 3, 2026, prior to the maturity date.
  6. F6. Represents securities held by MVIL, LLC.
Preferred conversion shares 6,840,213 shares Class A Common Stock received from automatic conversion of Convertible Preferred Stock before IPO closing
Common stock purchase 312,500 shares at $16 per share Common stock purchased on August 3, 2026 in an open-market or private transaction
Convertible note principal $1,000,000 Principal amount of Notes issued September 17, 2025 to the reporting person
Note interest rates 8% then 15% annually 8% interest until March 31, 2026, then 15% annually until repaid or converted
IPO share price $16 per share IPO pricing on July 30, 2026 that set the basis for the note conversion discount
Note conversion price $14.40 per share Automatic note conversion price, reflecting a 10% discount to the $16 IPO price
Shares from note conversion 75,624 shares Class A Common Stock received from automatic conversion of the $1,000,000 note
Convertible Preferred Stock financial
"Each share of convertible preferred stock ("Convertible Preferred Stock") was convertible into one share"
Convertible preferred stock is a special class of company shares that pays priority, usually fixed, payments to holders and can be exchanged later for a set number of common shares. It matters to investors because it combines steady income and added protection with the chance to share in a company’s upside; think of it as a hybrid between a bond that pays regularly and an option to convert into growth-oriented stock, where the conversion rules influence both potential gains and how much common shareholders’ ownership may be reduced.
Convertible Promissory Notes financial
"conversion of all outstanding shares of the Issuer's ... and Convertible Promissory Notes (the "Notes")"
A convertible promissory note is a loan a company takes that can later be turned into shares instead of being paid back in cash; think of lending money now in exchange for a voucher that can become ownership later. Investors care because it mixes credit risk and potential ownership upside—it can protect lenders if a company struggles while also diluting existing shareholders when converted, affecting future share value and investor returns.
Reclassification financial
"each share of Class A Common Stock was then reclassified into one share of common stock ("Common Stock") ... (the "Reclassification")"
Reclassification is the formal change in how an asset, liability, security, transaction, or business activity is labeled on financial records or under rules. It matters to investors because the new label can alter reported profits, tax treatment, ownership rights or perceived risk—much like moving an item from 'personal' to 'business' use, it doesn't create value by itself but can change comparisons, taxes, and who controls outcomes.
Section 16(b) regulatory
"in a transaction exempt from Section 16(b) of the Securities Exchange Act of 1934, as amended"
A federal rule that requires company insiders—like officers, directors and large shareholders—to return any profits made from buying and selling the company’s stock within a six-month window. It matters to investors because it discourages short-term trades that could exploit non-public information and helps protect outside shareholders by creating a simple, enforceable way to recover unfair gains, much like a rule stopping someone from flipping a limited-edition item for quick profit after getting early access.
Rule 16b-7 regulatory
"transaction exempt from Section 16(b) ... pursuant to Rule 16b-7 thereunder"
A U.S. Securities and Exchange Commission safe-harbor rule that shields corporate insiders (officers, directors and large shareholders) from automatic short-swing profit claims when they buy or sell their company’s stock under a pre-approved, written plan that follows specific timing and nondiscretionary rules. For investors, the rule matters because it distinguishes routine, formula-driven insider transactions from opportunistic trades that could trigger automatic profit recoveries—think of it as an approved autopilot for insider trading that reduces legal uncertainty when the plan’s conditions are met.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Morningside report in its Form 4 for Apnimed (APMD)?

Morningside reported automatic conversions of Convertible Preferred Stock and a $1,000,000 convertible note into Class A Common Stock around Apnimed’s IPO, plus a purchase of 312,500 common shares at $16 per share.

How many Apnimed (APMD) shares came from preferred stock conversion?

All reported Convertible Preferred Stock converted automatically into 6,840,213 shares of Class A Common Stock immediately before Apnimed’s IPO closing, then those Class A shares were reclassified one-for-one into common stock in a Rule 16b-7 exempt transaction.

What were the terms of the Apnimed (APMD) convertible promissory note?

Morningside acquired a $1,000,000 note issued September 17, 2025, paying 8% interest until March 31, 2026 and 15% thereafter. It automatically converted into 75,624 Class A shares at $14.40 per share, a 10% discount to the $16 IPO price.

What common stock purchase did Morningside make in Apnimed (APMD)?

Morningside purchased 312,500 shares of common stock on August 3, 2026 at a price of $16 per share, reported as a purchase in an open-market or private transaction, increasing its direct common stock holdings.

How were Apnimed (APMD) Class A shares reclassified in this Form 4?

After converting preferred stock, Class B and C stock, and notes into Class A Common Stock, each Class A share was reclassified into one share of common stock in a transaction described as exempt from Section 16(b) under Rule 16b-7 of the Exchange Act.

Who has voting power over the Apnimed (APMD) shares held by Morningside?

The filing states that Frances Anne Elizabeth Richard, Jill Marie Franklin, Peter Stuart Allenby Edwards and Cheung Ka Ho, as directors of Morningside and MVIL, LLC, share voting and dispositive power and each disclaims ownership of those securities.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Morningside Venture Investments Ltd

(Last)(First)(Middle)
2ND FLOOR, LE PRINCE DE GALLES 3-5
AVENUE DES CITRONNIERS

(Street)
MONACOMC 98000

(City)(State)(Zip)

MONACO

(Country)
2. Issuer Name and Ticker or Trading Symbol
Apnimed, Inc. [ APMD ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/03/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Class A Common Stock08/03/2026C6,840,213A(1)6,840,213D(2)
Class A Common Stock08/03/2026J(3)V6,840,213D(3)0D(2)
Common Stock08/03/2026J(3)V6,840,213A(3)6,840,213D(2)
Common Stock08/03/2026P312,500A$167,152,713D(2)
Class A Common Stock08/03/2026C75,624A$14.4(4)75,624IBy MVIL, LLC(2)(6)
Class A Common Stock08/03/2026J(3)V75,624D(3)0IBy MVIL, LLC(2)(6)
Common Stock08/03/2026J(3)V75,624A(3)75,624IBy MVIL, LLC(2)(6)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Convertible Preferred Stock(1)08/03/2026C9,227,454 (1) (1)Class A Common Stock6,840,213$00D(2)
Convertible Promissory Note$14.4(4)08/03/2026C1,088,986.3(4) (4) (5)Class A Common Stock75,624$00IBy MVIL, LLC(2)(6)
Explanation of Responses:
1. Each share of convertible preferred stock ("Convertible Preferred Stock") was convertible into one share of Class A common stock ("Class A Common Stock") at any time at the option of the holder into such number of fully paid and non-assessable shares of Class A Common Stock as was determined by dividing the original issuance price of each series of Convertible Preferred Stock by each series' conversion price in effect at the time of conversion. The Convertible Preferred Stock reported herein automatically converted immediately prior to the closing of the Issuer's initial public offering (the "IPO") into 6,840,213 shares of Class A Common Stock without payment of additional consideration. The Convertible Preferred Stock had no expiration date.
2. Frances Anne Elizabeth Richard, Jill Marie Franklin, Peter Stuart Allenby Edwards, and Cheung Ka Ho are the directors of Morningside Venture Investments Limited ("Morningside") and share voting and dispositive power with respect to the securities held by Morningside and MVIL, LLC, Morningside's wholly-owned subsidiary. Ms. Richard, Ms. Franklin, Mr. Edwards, and Mr. Cheung each disclaim ownership of the securities owned by Morningside and MVIL, LLC.
3. Following the conversion of all outstanding shares of the Issuer's Convertible Preferred Stock, Class B common stock, Class C common stock, and Convertible Promissory Notes (the "Notes") into shares of Class A Common Stock immediately prior to the closing of the IPO, each share of Class A Common Stock was then reclassified into one share of common stock ("Common Stock") in a transaction exempt from Section 16(b) of the Securities Exchange Act of 1934, as amended (the "Exchange Act") pursuant to Rule 16b-7 thereunder (the "Reclassification").
4. The Notes were originally issued on September 17, 2025, with the Reporting Person acquiring a Note with a principal amount of $1,000,000. The Notes earned interest at a rate of 8% annually until March 31, 2026, and thereafter earned interest at a rate of 15% annually until repaid or converted. The Notes included a conversion feature providing for automatic conversion into Class A Common Stock at or immediately prior to the closing of the IPO at a 10% discount to the IPO price per share. As a result of the IPO pricing on July 30, 2026, at a price of $16 per share, this Note automatically converted into shares of Class A Common Stock immediately prior to the closing of the IPO on August 3, 2026, at a conversion price of $14.40.
5. The Notes were scheduled to mature on September 17, 2027, but converted automatically upon the closing of the IPO on August 3, 2026, prior to the maturity date.
6. Represents securities held by MVIL, LLC.
/s/ Frances Anne Elizabeth Richard, for Morningside Venture Investments Limited08/05/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

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